/Engine/Plugins/FX/Niagara/Source/NiagaraEditor/Public/NiagaraNode.h
Create a visual widget to represent this node in a graph editor or graph panel. If not implemented, the default node factory will be used.
virtual [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [SGraphNode](API\Editor\GraphEditor\SGraphNode) > CreateVisualWidget()